CN201568337U - Electric fan without blade - Google Patents

Abstract

The utility model relates to an electric fan without blade, which comprises an annular nozzle, a base, a housing and a brushless motor. The top end of the base is provided with the annular nozzle with a large-area area center. An air discharging outlet is annularly provided in the annular nozzle. A DC brushless motor is provided in the base. An air inlet is provided outside the housing. A diffuser outlet and an impeller inlet are communicated with a hollow channel part provided in the base. The air discharging outlet is a circular ring type rotating incision. A communicated annular pipe is provided in the annular nozzle. The beneficial effects of the electric fan without blade are characterized in that: the air strength can be increased for 15 times through compulsively blowing the air out of a thin and small circle; the covering area which can be transmitted is smaller than that of the prior-art fan and a cooling effect is obtained; the air flowing is more smooth than that of the common fan; the electric fan is same with the prior-art majority desktop fan through the continuous air flow, is rotatable and is controlled by a dimmer switch; a higher energy benefic is obtained.

Description

A kind of on-bladed formula electric fan

Technical field

The utility model relates to a kind of bracker fan, relates in particular to a kind of on-bladed formula electric fan.

Background technique

Electric fan is a kind of electrical equipment that is used to dispel the heat, and its structure generally is made up of rotor, stator, bearing and control circuit, is controlled its coil conducting via circuit and is produced the inner excitatory rotor rotation that makes by the IC induced magnet; Its kind is divided into the sharp commutator electric fan of single-phase capacitance formula, single-phase cover pole type, triphase induction type, direct current and alternating direct-current by the structural type of motor, can be domestic electric fan and industrial ventilating fan by purposes.Its composition of indoor fan of a lot of types generally comprises an independent cover and is mounted to blade and the rotating driving device that rotates around axis, this type of device shortcoming is because of the variation by blade surface or fan outer end face, and making fails to be convened for lack of a quorum before the air of rotation blade generation of fan allows the user feel inhomogeneous.In addition, nice and cool effect is along with weakening with the increase of user's distance, and promptly fan must closely be placed near the user and could allow the user obtain the benefit of fan.Also have some same devices, when fan places or during near worktable, its volume is big and take a large amount of working zone of user; Common a plurality of equipment must be placed in the same area, provides a little near power supply, and near miscellaneous equipment, connects and minimizing operating cost with convenient; In addition, also existing bigger drawback aspect manufacture cost, installation and maintenance, working life.

The model utility content

At above defective, the utility model provides a kind of can produce air-flow with even velocity from the emission output face of fan, the on-bladed formula electric fan that source benefit is higher, can save operating cost is extensive use of to be implemented in room, office or other indoor environment.

For achieving the above object, the utility model is by the following technical solutions:

A kind of on-bladed formula electric fan, comprise ring nozzle, pedestal, engine housing and brushless electric machine, engine housing top is provided with the pedestal of driving mechanism, the position that this pedestal is rotatable or inclination is beneficial to user's adjustment and moves nozzle, the ring nozzle that has the large area region central through bore is installed on the pedestal top, and ring is provided with exhaust port in the described ring nozzle; Described base interior is provided with dc brushless motor, brushless electric machine is anchored on the fixed base by rubber seal, air intlet is offered in the engine housing outside, impeller is connected on the running shaft that extends outward from brushless electric machine, and diffuser outlet, impeller eye and the hollow channel that is positioned at pedestal partly are communicated with; Described exhaust port is the otch that circular ring type rotates, and ring nozzle inside is the connecting shape circulating line.

The beneficial effect of on-bladed formula electric fan described in the utility model is: blow out in tiny circle otch by making force air, and then the enhancing air quantity can reach 15 times; Can transmit from the area of coverage less than existing fan and have nice and cool effect; Air flows is more steady than conventional fan, can not feel to impact and stimulate; It is identical with existing most bracker fans by the air stream that continues, and turns and is controlled by light-regulating switch; Can not cover dust owing to there is blade, more can not cause certain injury the user; Has higher source benefit.

Description of drawings

With reference to the accompanying drawings the utility model is described in further detail below.

Fig. 1 is the Facad structure schematic representation of the described on-bladed formula of the utility model embodiment electric fan;

Fig. 2 is the part schematic perspective view of the described on-bladed formula of the utility model embodiment electric fan;

Fig. 3 is the inside cross-sectional schematic of the described on-bladed formula of the utility model embodiment electric fan.

Among the figure:

1, ring nozzle; 2, central through bore; 3, exhaust port; 4, pedestal; 5, engine housing; 6, switch button; 7, brushless electric machine; 8, motor casing; 9, impeller; 10, rubber seal; 11, impeller eye; 12, air intlet; 13, diffuser outlet; 14, fixed base.

Embodiment

As Figure 1-3, the described on-bladed formula of the utility model embodiment electric fan, comprise ring nozzle 1, pedestal 4, engine housing 5 and brushless electric machine 7, described engine housing 5 tops are provided with the pedestal 4 of driving mechanism, it is the ring nozzle 1 of large size central through bore 2 that the middle part is installed on the top of this pedestal 4, ring is provided with exhaust port 3 in the described ring nozzle 1, this exhaust port 3 is the otch that 1.3 mm wides and circular ring type rotate, air is forced to from then on blow out in the otch, the air quantity of passing through can reach 15 times, and its speed per hour can increase to 35 kilometers; Described ring nozzle 1 connects and has the cylindrical base 4 of external engine housing 5 and by this base supports, in this pedestal 4 some switch buttons 6 of controlling fan assembly are set; Described pedestal 4 inside are provided with dc brushless motor 7 and its outside motor casing 8 of installing, and air intlet 12 is offered in described engine housing 5 outsides.Described brushless electric machine 7 is anchored on the fixed base 14 by rubber seal 10 and remains in firm position, impeller 9 is connected on the running shaft that extends outward from brushless electric machine 7, and diffuser outlet 13, impeller eye 11 and the hollow channel that is positioned at pedestal 4 partly are communicated with the air-flow with generation inner passage of 1 from impeller 9 to ring nozzle; Described brushless electric machine 7 is connected with electrical connection and power supply part and by controller control, the connection between controller and a plurality of switch button 6 can be controlled fan assembly.

The described on-bladed formula of above the utility model embodiment electric fan, described ring nozzle 1 inner passage is for annular and form nozzle interior continuous circuit or pipeline, and described diffuser comprises that partly the diffuser surface is with the flow of further increase from fan assembly conveying or delivery air stream; The extended distance of diffuser part is about as the user makes suitable selection with operation or when starting fan from button, transmit signal or other message to drive brushless electric machine 7, air is drawn in the fan assembly via air intlet 12 then, be divided into two strands of air-flows and pass the inner passage in the opposite direction from the exhaust of diffuser outlet 13 air-flows that leave and impeller 9, be compressed when air-flow enters exhaust port 3, and further compressed at outlet 44 places of relief opening 12.Be compressed in and produce pressure in the system; The stream pressure that brushless electric machine 7 produces is at least 400kPa, and air-flow is discharged by outlet as main air flow.

Claims (4)

1. on-bladed formula electric fan, comprise ring nozzle (1), pedestal (4), engine housing (5) and brushless electric machine (7), engine housing (5) top is provided with pedestal (4) rotatable or that tilt, it is characterized in that: the ring nozzle (1) that has large area region central through bore (2) is installed on institute's pedestal (4) top, and ring is provided with exhaust port (3) in the described ring nozzle (1); Described pedestal (4) inside is provided with dc brushless motor (7), air intlet (12) is offered in engine housing (5) outside, impeller (9) is connected on the running shaft that extends outward from brushless electric machine (7), and diffuser outlet (13), impeller eye (11) partly are communicated with the hollow channel that is positioned at pedestal (4).

2. on-bladed formula electric fan according to claim 1 is characterized in that: the otch that described exhaust port (3) rotates for circular ring type.

3. on-bladed formula electric fan according to claim 1 is characterized in that: described brushless electric machine (7) is anchored on the fixed base (14) by rubber seal (10).

4. on-bladed formula electric fan according to claim 1 is characterized in that: described ring nozzle (1) is inner to be the connecting shape circulating line.

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